Nut-lock.



G. D. HUTUHISON.

NUT LOOK. APPLIOATION FILED MAR. 2; 1914.

1,098,441. Patented June 2, 1914.

GEORGE. D. HUTCHISON, OF BAR-STOW, CALIFORNIA.

NUT-LOCK.

Specification of Letters Patent.

Patented J une2, 1914..

Application filed March 2, 1914. Serial No. 821,914.

To all whom it may concern:

Be it known that I, GEORGE D. Heroinson, a citizen of the United States, residing at Barstow, in the county of San Bernardino and State of California, have invented certain new and useful Improvements in Nut- Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to means for securing nuts upon their respective bolts to prevent a relative rotation or endwise separation thereof.

More particularly stated it relates to improv ements in nut locks, and means for positively coupling together or interlocking such nuts and their respective bolts by a stop or looking member fiXed with relation to the bolt and adapted to engage the side of the nut.

The invention further contemplates making a nut lock of unitary construction, having a cotter pin element for securing it to the bolt member, and has among other objects that of producing an inexpensive, durable, and simple lock which is easily applied, and most eiiicient in its operation.

Other objects and advantages of the present invention will become apparent to persons skilled in the art to which it relates, and the novel features of invention will be hereinafter particularly described and pointed out in the claims following.

In the accompanying drawings which form part of this application for Letters Patent, and whereon corresponding numorals indicate like parts in the several views: Figure 1 is a side elevation of my invention applied to an ordinary bolt and nut, but before final bending of the cotter pin element. Fig. 2 is a top plan view of parts shown by Fig. 1. Fig. 3 is an end View of parts shown by the preceding figures, with cotter pin element partially spread. Fig. i is view corresponding with Fig. 3, but illustrating one of many different forms of nuts to which the invention is applicable, and, Fig. 5 is a perspective view of the lock detached.

Reference being had to the drawings and numerals thereon, 1 indicates an ordinary metal bolt having the usual screw-threaded shank 2, and provided with a transverse opening 3 therethrough.

The numeral l indicates an ordinary nut which may be either square in cross sectional area as shown by Fig. 4: of the drawings, or of polygonal form without detracting in the least from the efliciency of the invention. The lock proper, as best shown by Fig. 5, is of unitary construction being of relatively still round wire bent into the form of a loop 5 having parallel sides 6, 6 connected as at 7 by an outward extension in a plane at right angles to that occupied by the sides of said loop, and terminating in an integral cottcrpin element 8. This cotter-pin element as best shown by Fig. 1 of the drawings, is bent inwardly from the sides 6, 6 in a plane at right angles thereto, and parallel with that occupied by the aforesaid outward 0X- tension 7, and is reduced or flattened upon its meeting faces until the combined thickness of its two members equals appr0Ximately the original diameter of the wire.

The construction of my invention being substantially as shown and described its use and operation are quite apparent, but it may be mentioned that my improved lock readily adapts itself not only to square nuts of all sizes as shown by Fig. 4, and to hexagonal nuts as shown by Figs. 1, 2 and 3, but to polygonal nuts generally, provided only, that a suitable hole or opening 3 has previously been made in the shank 2 of bolts to which nuts are to be locked. Presuming the bolt to have been thus prepared, and that a nut 41- has been firmly screwed to its seat or final position thereon, the cotter-pin element 8 is projected through the bolt opening 3 as indicated by Fig. 1, and drawn down snugly, as shown, until both sides 6 engage two independent sides or faces of nut d whereupon the members of cotter-pin 8 are bent forcibly and sharply in opposite directions as shown by Figs. 3 and a in the manner of fastening ordinary cotter pins. This separation or spreading of the cotter-pin members may, if desired, be continued until same entwinc or overlie shank 2 of the bolt; and, it will be noted, that, according to the length of side members 6, 6 a considerable range of adjustment is accorded nut 4: before passing from the embrace of said side members. That is to say, when desired the cotter-pin 8 may be first straightened, then backed out of open ing 3, the nut at adjusted one way or the other, and parts returned to locked position as often as occasion may require.

Having thus described my invention,

What I now claim and desire to secure by Letters Patent is:

1. As an article of manufacture a nutlock of unitary Wire construction having a loop with parallel sides for engaging independent sides of a nut, and a cotter-pin element projecting at an angle to the sides of said loop.

2. As an article of manufacture a nut lock of unitary Wire construction having a loop with parallel sides for engaging independent sides of a nut, an outward extension connecting said parallel sides, and a cotter-pin element projecting at an angle to the sides o1 said loop and in a plane parallel with that occupied by the outward extension aforesaid.

3. A nut-lock comprising a unitary structure of relatively stiff Wire having a loop sides of a nut, and a cotter-pin element projecting at an angle to the sides of said loop.

7 In testimony whereof I afiix my signature, in presence of two subscribing Witnesses.

GEORGE D. HUTCHISON. WVitnesses:

C. M. COTTON, S. O. CHAPMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

